ATM Chip Database

PLL

The function of the S3014 clock synthesis and recovery unit is to derive high speed timing signals for SONET/SDH based equipment. In clock recovery mode, the S3014 receives either an STS-3/STM1 or STS12/STM4 scrambled NRZ signal and recovers the clock from the data. In clock synthesis mode, the S3014 receives a 19.44, 51,84 or 155.52 MHz reference clock and outputs an STS3/STM1 or STS12/STM4 differential ECL clock.